Fix fuzzy search false corrections on valid terms (stale vocab cache)

Fix broken POST_MVP_ROADMAP.md references, link to Roadmap Discussion

Update SECURITY.md and CODE_OF_CONDUCT.md, add screenshots to bug template

Add SECURITY.md, CODE_OF_CONDUCT.md, and issue templates

Add DEV_TO_MAIN_CHECKLIST.md to gitignore, add merge protocol to CLAUDE.md

Remove johnny-goods files from repo, blanket-exclude all project folders

Add PreCompact + PostCompact hooks, update to 6 hooks

JG session: 9/10 publishability - massive voice/structure revision

Fix NameError in brain-setup.py phase 8 slash command registration

Remove 16 internal governance files before public launch

Update YouTube video link to new Mike Dolan channel

Add explainer video link to README

Add install demo GIF to README

Fix CI installer test: use direct prereq checks instead of sourcing

Fix CI installer test: allow Claude Code missing on runners